ADM Flow Meter
Reading and Setting a Split Ratio
Agilent CrossLab CS ADM Flow Meter Operation Manual
23
Reading and Setting a Split Ratio
In
Split
mode, you can store a flow measurement as a reference
value, and then compare subsequent flow measurement values
as a ratio of the current measurement to the reference
measurement. This is useful when verifying or troubleshooting
the operation of a gas chromatograph Inlet.
To read and set a split ratio:
1
With the unit switched on, repeatedly press the
Power/Mode button until
Split
mode is displayed.
NOTE
Accurate column flow rates can only be determined when
detector gases have been turned off.
2
Turn off the detector gases.
3
Connect the flexible tubing to the GC column gas flow.
4
Wait for the reading to stabilize (1 to 2 seconds).
5
Briefly press the Enter/Clear/Toggle button. The current
reading is stored as the reference value. The ratio value is
displayed as 1:1.
6
Disconnect the flexible tubing from the GC column flow
then connect it to the split vent or the gas flow that you
want to compare. The display shows the ratio directly.
